26 Questions
Which unit of time on the geological time scale encompasses a period of millions of years?
Epoch
What is the geological time category that does not consist of a uniform length of time?
Era
Which era is characterized as the age of mammals?
Cenozoic Era
What is the geological time scale unit that is the largest period of geological time?
Eon
Which era is the age of reptiles?
Mesozoic Era
What are the two major groups of geologic processes?
Endogenic and exogenic
Which observation of Wegener's theory is based on the match of mountain belts and rock types?
Match of mountain belts, rock types
What type of processes result in the building of plateaus, rift valleys, and volcanic mountains?
Tectonic processes
Which observation did Wegener make based on the distribution of plant and animal fossils?
Distribution of fossils
What was the major geologic event of the Precambrian Era?
Formation of mountain ranges
What did Wegener's observations of paleoclimates provide evidence for?
Continental glaciations
What process contributed to reducing the mountains to near-level rock surfaces?
Denudation
What types of rocks are the Precambrian rocks altered into due to pressure, heat, and earth movements?
Crystalline rocks
What sits beneath most rocks in Ethiopia, forming the basement rocks?
Crystalline rocks
What overlays the Precambrian rocks?
Recent rock formations
What covers the 'levelled' surface formed after the last orogenesis in the Precambrian Era?
Younger rock formations
During which geological era were the sediments in Ethiopia transported southward and eastward to form continental and marine deposits?
Paleozoic Era
In which part of Ethiopia do we find the Adigrat sandstone and Hintalo limestone layers?
Tigray
What was the major geological process of the Paleozoic Era?
Denudation
During which era did the land in present-day Horn of Africa and Arabian landmass experience alternate slow sinking and rising?
Mesozoic Era
Which geological era is considered to have the greatest potential for oil and gas deposits?
Mesozoic Era
Which major geological event led to the formation of the Adigrat sandstone and Hintalo limestone layers?
Sedimentation
What type of rock surface was formed as a result of denudation during the Paleozoic Era?
'Peneplained' surface
In which region of Ethiopia were rocks belonging to the Paleozoic Era found to be rare?
Tigray
During which era were the sediments transported to form marine deposits?
Mesozoic Era
Which geological era experienced compression by overlying rocks and cementing minerals resulting in sandstone and limestone layers?
Mesozoic Era
Test your knowledge on Alfred Wegener's principal observations that supported his theory of continental drift, including the fit of continents, matching mountain belts and rock types, distribution of fossils, and evidence of paleoclimates. Explore the key evidence for Pangaea and the movement of continents.
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